Abstract: Objective: To explore the clinical efficacy of Yiqi Yangyin Huoxue Decoction in treating patients with angina pectoris of
coronary heart disease. Methods: A total of 100 patients with angina pectoris of coronary heart disease admitted to the First Affiliated
Hospital of Guizhou University of Traditional Chinese Medicine from April 2023 to April 2024 were selected as the research subjects.
The patients were randomly divided into a control group （treated with conventional Western medicine） and an experimental group
（treated with a combination of conventional Western medicine and Yiqi Yangyin Huoxue Decoction） using a random number table
method. Each group had 50 patients and was treated continuously for 4 weeks. The clinical efficacy, occurence of adverse reactions,
attack of angina pectoris, cardiac function and vascular endothelial function, serum inflammatory factor levels, and changes in
hemorheological indicators were compared between the two groups. Results: The total effective rate of the experimental group was
significantly higher than that of the control group, and the experimental group was significantly better than the control group in
improving attack of angina pectoris, cardiac function, and endothelial function. The serum inflammatory factor contents of patients in
the experimental group were significantly lower than those of the control group, and the improvement of hemorheological indicators was
significantly better than that of the control group, with statistically significant difference （P<0.05）. Conclusion: The combination of
Yiqi Yangyin Huoxue Decoction and conventional Western medicine has significant therapeutic effects on angina pectoris of coronary
heart disease, it can reduce inflammation, improve heart function, endothelial function, and hemorheological indicators.

Key words: Yiqi Yangyin Huoxue Decoction, angina pectoris of coronary heart disease, vascular endothelial function, inflammatory
factors, hemorheology